Preheat oven to 350 degrees.,Lightly grease a 13 x 9 baking pan.,In large bowl combine flour, oats, 3/4 cup sugar and butter.,Mix until crumbly.,Reserve 1 1/2 cups crumb mixture for topping.,Bake 15 minutes and cool completely.,In a large bowl beat cream cheese until fluffy, gradually mix in condensed milk, lemon juice, and vanilla until smooth.,Pour evenly over crust.,In a small bowl combine remaining sugar, cornstarch and cranberry sauce.,Spoon over cream cheese mixture.,Sprinkle reserved crumb topping over top.,______,Store in refrigerator.